Scholarlink

<p>Various ZnAl<sub>2</sub>O<sub>4</sub>(Z)-based microwave dielectric ceramics-ZnTiAl<sub>2</sub>O<sub>4</sub> (ZT), ZnSiAl<sub>2</sub>O<sub>4</sub> (ZS), and ZnMgTiAl<sub>2</sub>O<sub>4</sub> (ZMT)-were synthesized via the sol–gel method. Doping with Ti, Si, and Mg enhanced dielectric permittivity. XRD (X-ray diffraction) confirmed phase coexistence, while (Field emission scanning electron microscopy) FESEM showed increased particle size with sintering. The calculated crystal sizes of the three materials were 15&#xa0;nm for ZT, 19&#xa0;nm for ZS, and 18&#xa0;nm for ZMT. Dielectric permittivity’s ranged from 12.8 to 14.75, with low dielectric losses (0.39–0.002 for ZT, 0.23–0.019 for ZS, 0.77–0.03 for ZMT). Raman and (Energy dispersive spectroscopy) EDS analyses validated structural and elemental features. Patch antennas using these ceramics achieved return losses of -29.08, -26.03, and -29.7&#xa0;dB at 4.79, 3.61, and 8.82&#xa0;GHz, demonstrating their potential for microwave applications.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Microwave Characterization of ZnMAl2O4 (M = Ti, Si, MgTi) Nanoceramics

  • 期刊论文

  • 发表日期：

    2025年2月24日

查看全文
  • Srilali Siragam

摘要

Various ZnAl2O4(Z)-based microwave dielectric ceramics-ZnTiAl2O4 (ZT), ZnSiAl2O4 (ZS), and ZnMgTiAl2O4 (ZMT)-were synthesized via the sol–gel method. Doping with Ti, Si, and Mg enhanced dielectric permittivity. XRD (X-ray diffraction) confirmed phase coexistence, while (Field emission scanning electron microscopy) FESEM showed increased particle size with sintering. The calculated crystal sizes of the three materials were 15 nm for ZT, 19 nm for ZS, and 18 nm for ZMT. Dielectric permittivity’s ranged from 12.8 to 14.75, with low dielectric losses (0.39–0.002 for ZT, 0.23–0.019 for ZS, 0.77–0.03 for ZMT). Raman and (Energy dispersive spectroscopy) EDS analyses validated structural and elemental features. Patch antennas using these ceramics achieved return losses of -29.08, -26.03, and -29.7 dB at 4.79, 3.61, and 8.82 GHz, demonstrating their potential for microwave applications.

Graphical Abstract